package com.atguigu.lease.web.admin.service.impl;

import com.atguigu.lease.common.minio.MinioProperties;
import com.atguigu.lease.web.admin.service.FileService;
import io.minio.*;
import io.minio.errors.*;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.web.multipart.MultipartFile;

import java.io.IOException;
import java.security.InvalidKeyException;
import java.security.NoSuchAlgorithmException;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.UUID;

@Service
public class FileServiceImpl implements FileService {
    @Autowired
    private MinioProperties properties;
    @Autowired
    private MinioClient client;
    @Override
    public String upload(MultipartFile file) throws ServerException, InsufficientDataException, ErrorResponseException, IOException, NoSuchAlgorithmException, InvalidKeyException, InvalidResponseException, XmlParserException, InternalException {
        //1.判断桶是否存在
        boolean bucketExists =
                client.bucketExists(BucketExistsArgs.builder().bucket(properties.getBucketName()).build());
        //2.若不存在则创建桶
        if (!bucketExists){
            client.makeBucket(MakeBucketArgs.builder().bucket(properties.getBucketName()).build());
            //3.设置桶的权限参数
            String policy = """
                {
                  "Statement" : [ {
                    "Action" : "s3:GetObject",
                    "Effect" : "Allow",
                    "Principal" : "*",
                    "Resource" : "arn:aws:s3:::%s/*"
                  } ],
                  "Version" : "2012-10-17"
                }""".formatted(properties.getBucketName());
            client.setBucketPolicy(SetBucketPolicyArgs.builder().bucket(properties.getBucketName()).config(policy).build());
        }
        //4.设置文件的名称，确保不重复同时生成包含日期信息的父文件夹
        String filename = new SimpleDateFormat("yyyyMMdd").format(new Date()) +"/" +
                UUID.randomUUID() + "-" +file.getOriginalFilename();
        //5.上传运行过程中前段文件
        client.putObject(
                PutObjectArgs.builder()
                        .bucket(properties.getBucketName())
                        .stream(file.getInputStream(), file.getSize(), -1)
                        .object(filename)
                        .contentType(file.getContentType())
                        .build());
        //6.返回url
        return String.join("/",properties.getEndpoint(),properties.getBucketName(),filename);
    }
}
